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DigitalGlobe's WorldView-3 spacecraft will return pictures of the Earth's surface down to a resolution of 31cm.
Until recently, the company was restricted to selling images sharper than 50cm only to the US government.
DigitalGlobe's products will be familiar to anyone using Google or Bing maps - both run on views captured by the firm's satellites.
But its pictures also find wide application in areas such as scientific investigations, urban planning, forestry and agricultural monitoring, and in mineral exploration.
WorldView-3 is an important moment for the Longmont, Colorado-based company, however.
The market place for commercial Earth imagery is getting increasingly competitive, and being able to go to sub-0.5m resolutions gives DigitalGlobe a stand-out advantage over its rivals.
"It's important for them to be able to differentiate themselves by being able to say, 'we have the most high-resolution and highest-accuracy data available'," commented Adam Keith, the director of space and Earth observation at industry-watchers Euroconsult.
"That's a strong statement to make when there are new systems entering the market. It won't necessarily open up new markets for them, but it will certainly allow them to better serve the markets they already have."
There are still some security concerns over releasing such powerful imagery on to the open market.
The US Commerce Department, which licenses American commercial satellite imagery providers, says DigitalGlobe must wait six months before putting out any 31cm products.  This will give the authorities time to assess any unforeseen issues or sensitivities.
The current benchmark is set by DigitalGlobe's GeoEye-1 satellite, which was launched in 2007.
Its systems can deliver a 41cm capability in the panchromatic mode (essentially black and white images).
WorldView-3 is another step forward again, says Rob Mitrevski from Exelis Geospatial Systems, which designed the new satellite's optics.
He tells people to imagine putting WorldView-3 in Los Angeles and then pointing it at San Francisco - a distance greater than 610km (380 miles).
"If we had that imaging system in the 'o' of the Hollywood Sign, we could count the number of people on the Golden Gate Bridge; we could count the number of cars and the colour of the cars - probably, the year and make of the cars, as well," he says.
At the core of WorldView-3 is a large telescope with a 1.1m primary mirror.
This directs the light to instrumentation which senses a total of 29 spectral bands.
A key innovation on WorldView-3 is its CAVIS instrument, which will monitor the state of the atmosphere.
This information will be used to correct pictures when the satellite views the Earth in more challenging conditions, such as when it is hazy or there are a lot of particulates (aerosols) in the sky.
"WorldView-3 by itself can collect 650,000 sq km [of imagery] a day, and if you add in our [existing] constellation - we'll be collecting four million sq km a day. That is almost half the size of the continental United States," says DigitalGlobe's Kumar Navulur.
"To get that kind of information to the ground, we've had to implement a much higher data rate - 1.2Gbps, which is much faster than wifi networks here on Earth," adds Alex Churnushin from Ball Aerospace, which has built all of DigitalGlobe's satellites.
The difficulty then is in processing all that data, and DigitalGlobe has developed an array of automated systems to prepare the various imagery products it now sells.
"When we have the data in the memory, we can actually do millions and trillions of operations very quickly," explains Dr Navulur.
"We're leveraging gaming technologies and the computing speeds with cloud computing to start extracting information."
DigitalGlobe operates at the pinnacle of the market.  There is no publicly available imagery that is sharper (some military systems are reputed to deliver 15-20cm resolutions).
Its main competitor in Europe is Airbus Defence and Space, which has a diverse range of satellite types and can capture 70cm imagery (re-sampled to 50cm) with its Pleiades optical constellation.
Then there is a raft of smaller operators with systems that generally work at 1m and above, with one or two now providing satellite video as well.
Today, the image data market is worth about $1.5bn a year.
Euroconsult expects this to climb to about $3.6bn by 2023.
Phil Davies, whose company Deimos just launched a 75cm-capable platform, said: "What's interesting is that the market seems to be separating - into very high performance systems, such as WorldView, which are largely serving a US government market; and then other operators who are coming in with much lower-cost systems where the resolution is not as good but you still meet a lot of the market requirements."
The most powerful commercial imaging satellite ever built has just gone into orbit from California, US.

He is in hospital in Lille, northern France. His life is not in danger.
French media say he was injured by five police bullets when his BMW hire car was chased and stopped on the A16 motorway near Boulogne.
Earlier six soldiers were injured - three seriously - when a BMW was driven at them in a Paris suburb.
The soldiers were attacked in a pedestrian zone, outside an apartment block where they were staying in Levallois-Perret. None of their injuries are considered life-threatening.
The Paris prosecutor described Wednesday morning's attack as "attempted killings... in relation to a terrorist undertaking".
France, involved in the fight against so-called Islamic State in Iraq and Syria, has frequently been the target of attacks by Islamist militants.
A state of emergency in force since November 2015 includes highly visible patrols under Operation Sentinel, numbering some 7,000 troops.
The suspect in Lille was on police records because of an earlier minor infringement, but he had normal French residency status. The intelligence services did not know of him, French media report.
He was unarmed when he was cornered by police on the motorway some 260km (162 miles) north of Paris.
He is a resident of Sartrouville, in the north-western suburbs of Paris, French media report.
There is an intense debate now about Operation Sentinel, since President Emmanuel Macron called for it to be reassessed. Some critics say the operation makes the security forces easier targets for terrorists.
On 13 November 2015, 130 people were killed in a night of attacks in Paris, and more than 100 have been killed in jihadist attacks since.
Wednesday's attack at about 08:15 local time (06:15 GMT) took place in a pedestrian zone near the soldiers' base on the Place de Verdun in Levallois-Perret.
Interior Minister GÃ©rard Collomb said the car had been driven deliberately at the troops and the attack had been carried out by a "man on his own".
It was driven slowly until it came within 5m (16ft) of the patrol before accelerating towards them, he said.
The man wounded by French police after an alleged attack on soldiers has been identified as a 36-year-old Algerian who was not on a watch list.

In his first interview, Dominic Chappell told BBC Newsnight he apologised "sincerely and utterly" to the chain's 11,000 staff.
Mr Chappell bought BHS's 163 stores from retail tycoon Sir Philip Green for £1 in March 2015.
Mr Chappell said the plight of the staff "plays on" him deeply.
But, he said, had he not become involved the chain would have gone into liquidation far sooner. A spokesman for Sir Philip denied that claim.
Mr Chappell confirmed that he had received £2.6m in payments during his ownership, but defended that income as fair. "I took a big risk going in," he said.
"We live in a risk reward society - that's the way companies are built and fail. Did I take a lot of money out? Yes I did. But did the business fail because of the amount of money I took out? No it didn't.
"This was just a drip in the ocean compared to the money that was needed to turn around BHS."
His salary of more than £600,000 was, he said, established by an independent committee.
Mr Chappell blamed Sir Philip Green for the eventual demise of the business, saying the Arcadia owner had "tipped it over the edge", but he had heavy criticism, too, for Frank Field, the politician leading the inquiry into why BHS failed.
Mr Chappell branded the Labour MP "pathetic".
He also said that he came very near to completing a deal to pass BHS on to the Sports Direct owner Mike Ashley, at one point handing over the ownership certificate, only for the purchase to fail.
It is less than a year-and-a-half since BHS was bought for £1 by Retail Acquisitions, a company specially created for the deal and 90% owned by Mr Chappell.
Barely a year after that deal had gone through, BHS went into administration and the group is now in the final stages of being wound up.
The question of who should carry the blame for the collapse of the retailer is the subject of a number of different inquiries, including one led by MPs.
And much of the focus has fallen upon two men - the retail billionaire Sir Philip Green, who owned BHS for 15 years, and Mr Chappell.
Mr Chappell, who had no experience of retail when he bought the business, has been described as a "Sunday league retailer", "a chancer" and a "Walter Mitty" fantasist by politicians.
He told BBC Newsnight that he made no secret of his lack of retail experience, saying "Sunday League retailer" was a fair description, but said he was an expert in turnarounds, which made him a suitable owner.
"We took a chance on BHS. We were the only people to stick our heads above the parapet and give it a go. Otherwise Sir Philip would have liquidated the company and thousands of people would have lost their jobs straight away. We did everything we could to save the company.
"We were the only people who were prepared to take that risk to try to get it to break even, to try to make a profit. So if that makes me a chancer, well yes I am."
He laughed off suggestions that he had threatened to kill chief executive Darren Topp, saying he had merely said he would "sort him out", but confirmed he had intended to fire Mr Topp from his job.
Mr Topp has subsequently been very critical of Mr Chappell's ownership of the retailer saying "he had his fingers in the till".
Mr Chappell defended his decision to use company funds to pay for a £1.5m loan to his father, saying "it had no impact whatsoever on BHS - and yes, I needed to help my parents, which I did".
He also described as "absolute nonsense" claims that he tried to use company funds to pay for holiday flights.
As for Sir Philip, Mr Chappell told the BBC the pair's working relationship had started well but then deteriorated.
He told the BBC: "Philip has been in BHS for one thing only, and that was to extract as much money as possible, which he did within the first couple of years."
He said he was shocked by the dilapidated state of some of the BHS stores, blaming Sir Philip for failing to invest in the company.
"He put very little investment into BHS," said Mr Chappell. "You only need to go and look at some of the stores that were in terrible condition. I went with my team to 50 to 60 of the stores in the first year.
"Some of them didn't have air-conditioning or heating. Some had water pouring through the roof, some had two or three floors closed that had been closed for two or three years because they were hazardous, asbestos, God knows what else.
"He did not invest money back into the business as he should've done."
Mr Chappell said his own reputation had been "absolutely destroyed" by the failure of BHS.
"We had some very, very big problems all the way through and we had the tide against us all the way. There was not one day that went past when we had some luck on our side. But we didn't just walk in, rip the guts out, and walk out again."
As for his own future he says he's expecting "a very very difficult period".
"I think corporately it's going to be hard for me to slot back into another business although, believe it or not, I have been offered two or three other positions in major retailers over the last couple of weeks, so who knows?"
Dominic Chappell was speaking in an exclusive interview with BBC Newsnight - watch in full on the programme at 22:30 BST on BBC Two

The former owner of failed High Street retailer BHS has described the £2.6m he took out of the company as a "drip in the ocean".

